Granted Patent
Utility
US 4,264,745 · App. 06/075,480
Fire-retardant polyurethane foam based on a bromine-containing polyester
Inventor:
Millard E. Foucht
Patented Case
View Patent ↗
Granted: Apr 28, 1981
Filed: Sep 14, 1979
Inventor
Millard E. Foucht
Assignee (at issue)
Owens-Corning Fiberglas Corp.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.